Power source device for a load with a stand-by power supply syst

Details Power source device for a load with a stand-by power supply syst Power source device for a load with a stand-by power supply syst

1985-12-17

1987-03-24

Beha, Jr., William H.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 46, 307 87, H02J 904

Patent

active

046527702

ABSTRACT:
A power source device according to this invention comprises a voltage and phase detector for detecting the voltage and phase of a power supply system, a first controller for controlling an inverter so that an output of the inverter may agree with either a reference voltage and a reference phase or with the voltage and the phase of the power supply system, a second controller for switching the inputs of the first controller from the reference voltage and phase to the power supply system voltage and phase, or vice versa, when the phases of a reference oscillator and the power supply system have agreed, and a third controller for switching the power to a load from the inverter to the power supply system, or vice versa, when the synchronism between the inverter output and the power supply system has been detected.

REFERENCES:
patent: 3909621 (1975-09-01), Nollace et al.
patent: 3932764 (1976-01-01), Corey
"Solar Power System for a Collective Housing", Takateru Tuji, Feb. 19, 1985.

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